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Property, Plant and Equipment (Notes)
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, Plant and Equipment:

Components of property, plant and equipment were as follows (in millions):
 
As of December 31,
 
2012
 
2011
Land
$
29.4

 
$
26.1

Buildings and improvements
208.6

 
201.4

Machinery and equipment
612.9

 
603.2

Construction in progress and equipment not yet in service
32.1

 
24.0

Total
883.0

 
854.7

Less accumulated depreciation
(584.8
)
 
(554.0
)
Property, plant and equipment, net
$
298.2

 
$
300.7



The balances above include capital lease assets comprised of buildings and improvements and machinery and equipment totaling $14.4 million and $16.6 million, net of accumulated depreciation of $8.9 million and $7.2 million for the years ended December 31, 2012 and 2011, respectively.

We recorded $0.2 million in machinery and equipment impairment for assets that are no longer in use for the year ended December 31, 2011. No impairment charges were recorded in 2012 or 2010.